CVE-2026-9547
EUVD-2026-4149503.07.2026, 07:16
When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for that host in the `known_hosts` file. Instead of rejecting the mismatch, the callback mechanism fails to properly enforce the restriction, allowing the connection to succeed without warning and risking a potential man-in-the-middle attack.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| haxx | curl | 7.69.0 ≤ 𝑥 < 8.21.0 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| curl | curl | 7.69.0 ≤ 𝑥 < 8.14.2 | CNA |
| curl | curl | 8.15.0 ≤ 𝑥 < 8.16.1 | CNA |
| curl | curl | 8.17.0 ≤ 𝑥 < 8.20.1 | CNA |
| curl | curl | 8.20.0 | CNA |
| curl | curl | 8.19.0 | CNA |
| curl | curl | 8.18.0 | CNA |
| curl | curl | 8.17.0 | CNA |
| curl | curl | 8.16.0 | CNA |
| curl | curl | 8.15.0 | CNA |
| curl | curl | 8.14.1 | CNA |
| curl | curl | 8.14.0 | CNA |
| curl | curl | 8.13.0 | CNA |
| curl | curl | 8.12.1 | CNA |
| curl | curl | 8.12.0 | CNA |
| curl | curl | 8.11.1 | CNA |
| curl | curl | 8.11.0 | CNA |
| curl | curl | 8.10.1 | CNA |
| curl | curl | 8.10.0 | CNA |
| curl | curl | 8.9.1 | CNA |
| curl | curl | 8.9.0 | CNA |
| curl | curl | 8.8.0 | CNA |
| curl | curl | 8.7.1 | CNA |
| curl | curl | 8.7.0 | CNA |
| curl | curl | 8.6.0 | CNA |
| curl | curl | 8.5.0 | CNA |
| curl | curl | 8.4.0 | CNA |
| curl | curl | 8.3.0 | CNA |
| curl | curl | 8.2.1 | CNA |
| curl | curl | 8.2.0 | CNA |
| curl | curl | 8.1.2 | CNA |
| curl | curl | 8.1.1 | CNA |
| curl | curl | 8.1.0 | CNA |
| curl | curl | 8.0.1 | CNA |
| curl | curl | 8.0.0 | CNA |
| curl | curl | 7.88.1 | CNA |
| curl | curl | 7.88.0 | CNA |
| curl | curl | 7.87.0 | CNA |
| curl | curl | 7.86.0 | CNA |
| curl | curl | 7.85.0 | CNA |
| curl | curl | 7.84.0 | CNA |
| curl | curl | 7.83.1 | CNA |
| curl | curl | 7.83.0 | CNA |
| curl | curl | 7.82.0 | CNA |
| curl | curl | 7.81.0 | CNA |
| curl | curl | 7.80.0 | CNA |
| curl | curl | 7.79.1 | CNA |
| curl | curl | 7.79.0 | CNA |
| curl | curl | 7.78.0 | CNA |
| curl | curl | 7.77.0 | CNA |
| curl | curl | 7.76.1 | CNA |
| curl | curl | 7.76.0 | CNA |
| curl | curl | 7.75.0 | CNA |
| curl | curl | 7.74.0 | CNA |
| curl | curl | 7.73.0 | CNA |
| curl | curl | 7.72.0 | CNA |
| curl | curl | 7.71.1 | CNA |
| curl | curl | 7.71.0 | CNA |
| curl | curl | 7.70.0 | CNA |
| curl | curl | 7.69.1 | CNA |
| curl | curl | 7.69.0 | CNA |
Debian Releases
Ubuntu Releases
openSUSE / SLES Releases
openSUSE Product | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| curl |
| ||||||||||||||||||||||
| libcurl-devel |
| ||||||||||||||||||||||
| libcurl4 |
| ||||||||||||||||||||||
| libcurl4-32bit |
|
Red Hat Enterprise Linux Releases
Amazon Linux Releases
Amazon Package | |||
|---|---|---|---|
| curl |
| ||
| curl-debuginfo |
| ||
| curl-debugsource |
| ||
| curl-minimal |
| ||
| curl-minimal-debuginfo |
| ||
| libcurl |
| ||
| libcurl-debuginfo |
| ||
| libcurl-devel |
| ||
| libcurl-minimal |
| ||
| libcurl-minimal-debuginfo |
|
Common Weakness Enumeration